MCQ Chemistry X- SA1 (3)

MCQ - chemistry - SA1

By Sulekha Rani.R, PGT Chemistry, KV NTPC Kayamkulam

1. On putting a few drop of a liquid on pH stripe , the colour of pH stripe changed to green. the liquid is most probably

(a) lemon juice (b) dil HCl (c) NaOH solution (d)water

2. When a few drops of universal indicator were added to a dil solution of HCl,it is observed that the colour of the solution becomes

(a) colourless to blue (b) Colourless to red (c) blue to colourless (d) colourless to green

3. Zn granules added to dil HCl , colour of Zn granules changes to

(a) yellow (b) brown (c) black (d) white

4. Aluminium powder was added to Copper sulphate solution, colour of the solution changes from

(a) colourless to blue

(b) blue to colourless

(c) lightgreen to blue

(d) reddish brown to lightgreen

5. Barium chloride solution added to sodium sulphate solution, the following happenes.

(a) a white precipitate is formed

(b)a red precipitate is formed

(c) the colour of the solution tuns blue

(d) the pungent smelling gas evolved